How to avoid connecting cold wallets directly to apps for proving ownership.The brand new ENS Subdomain Authentication standard (EIP-5131) by Wilkins can drastically increase the security and convenience for users trying to prove ownership of their assets:Rather than ‘re-invent the wheel’, this proposal aims to use the widely adopted Ethereum Name Service in order to bootstrap a safer and more convenient way to sign and authenticate, and provide ‘read only’ access to a main wallet via one or ...